A029511 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 18 (most significant digit on right).

1, 2, 3, 6, 9, 17, 25, 65, 85, 160, 169, 175, 187, 221, 325, 856, 1965, 2264, 2309, 3332, 4080, 4182, 6073, 20757, 23392, 47345, 88689, 97846, 672676, 901816, 1317677, 2120393, 8595637

Offset

1,2

Comments

This sequence differs from A061947 in that all least significant zeros are kept during concatenation.

No more terms < 10^7. [Lars Blomberg, Oct 11 2011]

Links

Table of n, a(n) for n=1..33.

Index entries for related sequences

Example

See A029495 for example.

Mathematica

b = 18; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, Reverse[IntegerDigits[#, b]]], b], #] &] (* Robert Price, Mar 13 2020 *)

Crossrefs

Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.

Sequence in context: A018384 A282842 A056768 * A320271 A056532 A079289

Adjacent sequences: A029508 A029509 A029510 * A029512 A029513 A029514

Keyword

nonn,base,more

Author

Olivier Gérard

Extensions

Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002

Additional comments and more terms from Larry Reeves (larryr(AT)acm.org), May 25 2001

a(29)-a(33) from Lars Blomberg, Oct 11 2011

Status

approved